In the Jump Start: Web Forms Application - C# step 12 the code that is provided for the Page_Load method is not working.

Specifically the lines that store the oOrder.DataSet and the oOrderDetail.DataSet into the Session object.
The oOrder.DataSet and the oOrderDetail.DataSet both return null.
Whereas oOrder.EntityList.Count is 1, oOrder.EntityList[0].OrderID = 10281 (using ROMEY), and oOrderDetail.EntityList.Count is 3.

In other words data is being returned but DataSet does not appear to be getting set and returns "null".

Can anyone tell me if this is a bug or is the code in the documentation wrong?
Is there a correction to the Jump Start section that I am referring too?